/****************************************************************************
 *
 * Copyright (C) 2003-2008 Los Alamos National Security, LLC
 *                         Packet Analytics Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License Version 2 as
 * published by the Free Software Foundation.  You may not use, modify or
 * distribute this program under any other version of the GNU General
 * Public License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 ****************************************************************************/
package nfse.stats;

import java.io.*;
import java.net.*;
import java.sql.Timestamp;
import java.util.concurrent.Semaphore;

import nfse.NetFSE;
import nfse.NetFSERecord;
import nfse.NetFSEUtil;
import nfse.SensorInfo;

public class StatsSocket extends Thread {
	private Socket sock;
	private PrintWriter out = null;
	private File f = null;
	private final Semaphore available = new Semaphore(1, true);

	private StatsServer statsServer;

	public StatsSocket(Socket s, StatsServer statsServer) {
		sock = s;
		this.statsServer = statsServer;
	}

	public void writeToFile(String statsEntry) throws Exception {
		available.acquire();
		out.println(statsEntry);
		available.release();
	}

	public void rotateFile() throws Exception {
		available.acquire();
		if (out != null) {
			out.flush();
			out.close();
		}
		f = File.createTempFile("stats", ".csv");
		out = new PrintWriter(new FileWriter(f));
		statsServer.addStatsFile(f);
		available.release();
	}

	public void run() {
		try {
			long startMS = System.currentTimeMillis();
			DataInputStream dis = new DataInputStream(sock.getInputStream());
			DataOutputStream dos = new DataOutputStream(sock.getOutputStream());
			int sensorID = dis.readInt(); // read the sensor ID

			SensorInfo sensorInfo = NetFSE.getSensorInfo(sensorID);

			NetFSERecord rec = ((NetFSERecord) NetFSE.TYPE_CLASSES
					.get(new Integer(sensorInfo.getToolID())));

			rotateFile();

			long ts = System.currentTimeMillis(); // Unix time in MS used to
			// monitor throughput
			int len = 0;
			long count = 0;
			try {
				while (true) {
					try {
						len = dis.readInt();
					} catch (Exception e) {
						len = -1;
					}
					if (len == -1) {
						break;
					}
					int bytesRead = 0;
					byte[] dataBytes = new byte[len];
					while (bytesRead < len)
						bytesRead += dis.read(dataBytes, bytesRead, len
								- bytesRead);
					if (bytesRead != len) {
						System.err.println("Bad data, not enough bytes.");
					} else {
						//NetFSERecord record = null;
						//try {
					//		record = rec.generate(new String(dataBytes),
						//			sensorInfo.sensorID);
						//} catch (Exception e) {
							// System.out.println(new
							// String(dataBytes));
							// e.printStackTrace();
							//record = null;
						//}

						//if (record != null) {
							//StatsEntry stats = record.generateStats();
							// statsServer.addStats(sensorID, stats);
							//writeToFile(stats.toString());
							writeToFile(new String(dataBytes));
							// out.println(stats.toString());

							count++;

							if (count % 50000 == 0) {
								rotateFile();
								System.out.println("Rotated: '"
										+ f.getAbsolutePath() + "'");
							}

							if (count % 10000 == 0) {
								// Output statistics periodically
								long ts2 = System.currentTimeMillis();
								long ms = ts2 - ts;
								long elapsedMS = ts2 - startMS;
								float elapsedSec = (float) elapsedMS
										/ (float) 1000;
								float sec = (float) ms / (float) 1000;
								float sps1 = (float) count / elapsedSec;
								float sps2 = (float) 10000 / sec;
								System.out
										.println("StatsServer: Total Records="
												+ NetFSEUtil
														.formattedInteger(count)

												+ "; Current RPS= "
												+ NetFSEUtil
														.formattedDouble(sps2)
												+ "; Average RPS= "
												+ NetFSEUtil
														.formattedDouble(sps1)
												+ "");
								ts = System.currentTimeMillis();
							}
						//}
					}
				}

			} catch (Exception E) {
				E.printStackTrace();
			}
			out.flush();
			out.close();
			dis.close();
			dos.close();
			sock.close();
			System.out.println("Stats socket exited.");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}